<!DOCTYPE html>
<link rel=match href=block_formatting_context_max_width_ref.html>
<style>
html, body {
    margin: 0;
}
section {
    width: 300px;
}
div {
    height: 100px;
}
#a {
    float: right;
    width: 100px;
    background: gold;
}
#b {
    overflow: hidden;
    max-width: 200px;
    background: blue;
}
</style>
<section><div id=a></div><div id=b>

